4-2 Function Mode •You can also reset an Inverter trip by pressing the STOP/RESET key on the Digital Operator. •In reset selection C102, you can select alarm reset timing and either enable/disable in normal operation. •For the RS terminal, only NO contact is available. 4 Functions (Example 1) (Example 2) RS ON RS ON OFF ON OFF ON Alarm OFF Alarm OFF Thermistor Trip Function This function protects the motor by tripping with the built-in thermistor detecting a temperature rise. •Allocate 19 (PTC) to multi-function input 5 (C005). This cannot be used with other multi-function terminals. (Use a thermistor with the PTC characteristics.) •Trip level is fixed at 3 k Ω ±10% max.
For how to connect the thermistor, refer to "Functions and Connections of the Control Circuit Terminals" (page 2-23). 4-57 Parameter No. Function name Data Default setting Unit C102 Reset selection 00: Trip reset at power-on (example 1) Enabled during normal operation (shuts off output) 00 ⎯ 01: Trip reset at power-off (example 2) Enabled during normal operation (shuts off output) 02:
Trip reset at power-on (example 1) Disabled during normal operation (trip reset only) Data Symbol Function name Status Description 19 PTC Thermistor input Connected When the thermistor is connected between terminals S5 and SC, the Inverter can detect motor temperature and, if the temperature exceeds the specified level, trips to shut off the output (E35). The level is fixed. Open If the thermistor is not connected, the Inverter trips (E35) to shut off the output even with this function selected. Related functions C005 only